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| author | Richard Kenner <kenner@gcc.gnu.org> | 1996-06-08 13:55:15 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1996-06-08 13:55:15 -0400 |
| commit | eb5ce910419ea79722f9e5ea88331a8051c8fac4 (patch) | |
| tree | 92e0ce5b11add3236bef534fe8c8f5a086d01c89 /gcc | |
| parent | 0e09cc26eee23001577e0851562172fa92cb1a53 (diff) | |
| download | gcc-eb5ce910419ea79722f9e5ea88331a8051c8fac4.zip gcc-eb5ce910419ea79722f9e5ea88331a8051c8fac4.tar.gz gcc-eb5ce910419ea79722f9e5ea88331a8051c8fac4.tar.bz2 | |
(define_insns for ffs[qhs]i2): Deleted.
(define_insns for ffs[qhs]i2): Deleted. These patterns only worked
when the input operand was not the same as the output operand.
(define_expand for ffssi2): New pattern. This uses an anonymous
pattern that describes what the ns32k's ffsd instruction (really)
does.
From-SVN: r12244
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/ns32k/ns32k.md | 53 |
1 files changed, 27 insertions, 26 deletions
diff --git a/gcc/config/ns32k/ns32k.md b/gcc/config/ns32k/ns32k.md index 679ca9a..a1a0885 100644 --- a/gcc/config/ns32k/ns32k.md +++ b/gcc/config/ns32k/ns32k.md @@ -2607,32 +2607,33 @@ ;; ffs instructions -(define_insn "ffsqi2" - [(set (match_operand:QI 0 "general_operand" "=g") - (ffs:QI (match_operand:SI 1 "general_operand" "g")))] - "" - "* -{ - return \"movqb 0,%0; ffsd %1,%0; bfs 1f; addqb 1,%0; 1:\"; -}") - -(define_insn "ffshi2" - [(set (match_operand:HI 0 "general_operand" "=g") - (ffs:HI (match_operand:SI 1 "general_operand" "g")))] - "" - "* -{ - return \"movqw 0,%0; ffsd %1,%0; bfs 1f; addqw 1,%0; 1:\"; -}") - -(define_insn "ffssi2" - [(set (match_operand:SI 0 "general_operand" "=g") - (ffs:SI (match_operand:SI 1 "general_operand" "g")))] - "" - "* -{ - return \"movqd 0,%0; ffsd %1,%0; bfs 1f; addqd 1,%0; 1:\"; -}") +(define_insn "" + [(set (match_operand:SI 0 "general_operand" "ro") + (minus:SI + (plus:SI (ffs:SI (zero_extract:SI + (match_operand:SI 1 "general_operand" "g") + (minus:SI (const_int 32) (match_dup 0)) + (match_dup 0))) + (match_dup 0)) + (const_int 1)))] + "" + "ffsd %1,%0; bfc 1f; addqd %$-1,%0; 1:") + +(define_expand "ffssi2" + [(set (match_operand:SI 0 "general_operand" "=g") (const_int 0)) + (set (match_dup 0) + (minus:SI + (plus:SI (ffs:SI (zero_extract:SI + (match_operand:SI 1 "general_operand" "g") + (minus:SI (const_int 32) (match_dup 0)) + (match_dup 0))) + (match_dup 0)) + (const_int 1))) + (set (match_dup 0) + (plus:SI (match_dup 0) + (const_int 1)))] + "" + "operands[1] = make_safe_from(operands[1], operands[0]);") ;; Speed up stack adjust followed by a HI fixedpoint push. |